package cn.tedu.v3_1;

import javax.sound.sampled.Port;
import java.io.*;
import java.net.*;
import java.util.*;

/**
 * Client 客户端--改成 Server 端模式 【优化】
 */
public class Client {
    private Socket socket;
    private static final String Host="127.0.0.1";
    private static final Integer Port=4545;
    private PrintWriter pw;
    private BufferedReader br;
    public Client() {
        try {
            socket = new Socket(Host,Port );
            pw = new PrintWriter(new BufferedWriter(new OutputStreamWriter(socket.getOutputStream(), "UTF8")), true);
            br = new BufferedReader(new InputStreamReader(socket.getInputStream(), "UTF8"));
        } catch (NullPointerException e) {
            System.out.println("友情提示：IP传入错误导致链接失败~");
        } catch (UnknownHostException e) {
            System.out.println("友情提示：IP传入错误");
        } catch (ConnectException e) {
            System.out.println("客户端链接失败：建议检查IP或者端口号");
        } catch (IOException e) {
            System.out.println("客户端链接服务器失败：检查IP/端口");
        }
    }

    public void start() {
        try {
            new Thread(() -> {
                try {
                    String message;
                    while ((message = br.readLine()) != null) {
                        System.out.println("服务器端说：" + message);
                        System.out.println("客户端请输入：");
                    }
                } catch (IOException e) {
                    System.out.println("服务器端读入失败了！");
                }
            }).start();
            Scanner input = new Scanner(System.in);
            while (true) {
                System.out.println("客户端请输入：");
                String line = input.nextLine();
                pw.println("客户端说："+line); //发给服务器
                System.out.println("写出成功。");
            }
        } finally {
            if (pw != null)
                pw.close();
            try {
                if (br!=null)br.close();
            } catch (IOException e) {
                System.out.println("客户端关闭失败~");
            }
            if (socket != null && !socket.isClosed()) {
                try {
                    socket.close();
                } catch (IOException e) {
                    System.out.println("通讯关闭失败");
                }
            }
        }
    }

    public static void main(String[] args)  {
        Client client = new Client();
        client.start();
    }

    }

